The Type 86 7.62mm coaxial machine gun is an improvement of the Type 80 7.62mm general-purpose machine gun made in China, and its prototype is the famous gunsmith of the former Soviet Union, the father of AK47, Kalashnikov designed the PKMC 7.62mm general-purpose machine gun, and completely inherited the fine tradition of simple structure, reliable action and durability of the AK rifle.

The origin of this type of machine gun is quite legendary, it turned out that in the self-defense counterattack against Vietnam, the Chinese army captured the PKMC 7.62 mm general-purpose machine gun that the former Soviet Union aided Vietnam on the battlefield, and then imitated it in China, and in 1980 it was finalized by design, and in 1983 it was finalized through production, and it was officially named the 80 type 7.62 mm general-purpose machine gun. It is also the only general-purpose machine gun developed by our country.

The so-called general-purpose machine gun, also known as light and heavy dual-purpose machine gun, is a medium-caliber machine gun that can be carried by a single person, adopts an air-cooled design, is fed by a chain, and can quickly change the barrel, that is, it can use a bipod like a light machine gun, or it can be used on a tripod like a heavy machine gun. It not only has the advantages of long range, great power and long continuous shooting time of heavy machine guns, but also has the advantages of light machine guns that are easy to carry and flexible, and can closely follow the advantages of infantry to implement fire support between the marches, which first appeared in World War II, from the 50s of the 20th century, countries generally replace the status of medium-caliber heavy machine guns with general-purpose machine guns.

Moreover, after the successful imitation of the Type 80 7.62 mm general-purpose machine gun, a comprehensive comparative test was carried out with the main medium-caliber machine guns assembled by the PLA at that time, the Type 67 and Type 67-1 heavy machine guns, in several major military regions across the country. The conclusion is that the shooting accuracy and life of the Type 80 7.62 mm general-purpose machine gun can fully meet the requirements of tactical and technical use, and are better than the Type 67 and Type 67-1 heavy machine guns. When used as a light machine gun, its performance is significantly better than that of Type 67 and Type 67-1 heavy machine guns.

However, due to the limitations of the PLA's tactical thinking at that time, and the special era when the military gave way to the economy, the Type 80 7.62 mm general-purpose machine gun was not installed in the whole army, but as a foreign trade export product, during the Iran-Iraq War, both Iran and Iraq purchased a large number of Type 80 7.62 mm general-purpose machine guns from China.

At that time, China was developing the Type 86 infantry fighting vehicle, and the Type 80 7.62 mm general-purpose machine gun was selected, with the butt removed, the grip, and the electric shock device were installed, as the Type 86 infantry fighting vehicle coaxial machine gun, and was officially named the Type 86 7.62 mm coaxial machine gun. Later, other new tanks, infantry fighting vehicles, armored vehicles, etc. were successively assembled in our country.

The Type 86 7.62 mm coaxial machine guns installed on the two 318 boats were dismantled from the warrior vehicles, and when the two boats slowed down and fired at the same time from the machine guns on the left and right sides of the river, they launched a fierce strafing fire at the Japanese troops who fell into the water. At the same time, two crew members were armed with Type 95 assault rifles and fired at the Japanese soldiers in the water.

Although the Japanese soldiers knew how to dodge the water, it was impossible to dodge bullets in the water, so at this time, they could only look at the character, but at this time, the distance was so close, and the bullets fired by the machine guns were extremely dense, and the soldiers in the river were suddenly beaten and screamed, and there were many dead and wounded. After the two 318 boats slowly sailed through this water, the river was already full of the corpses of Japanese soldiers, and the river water had been stained red with blood, and there were only a few Japanese soldiers still alive in the water.

After the two 318 boats slowly turned around in the Haihe River, the Kunming ships had stopped bombarding the Japanese troops on the opposite shore, and the twin 14.5-mm machine guns in the bows of the two 318 boats spewed out tongues of fire and opened fire on the Japanese soldiers on the shore. At this time, the Japanese troops on the shore had already been scattered by artillery bombardment, and then they were strafed by the machine guns of the 318 boats, and they were killed and wounded everywhere, and the remaining Japanese soldiers dared to stop on the bank of the river for a long time and fled backwards one after another.

The Japanese officer who led the team saw that most of the wooden boats had been shot out, and that there were still these two speedboats guarding the Haihe River, and that they would definitely not be able to cross the river tonight, so they had to order a retreat to Li Zhuangxiao to garrison. However, when the Japanese army had just retreated a distance of only a few hundred meters, they only heard the guns in front of them, and they were met with a dense rain of bullets, and suddenly a large platoon fell.

After receiving the order from the headquarters, the defenders who were originally stationed at the fort on the north bank of Dagukou immediately attacked and launched an attack on the Japanese position at Li Zhuangzi. At this time, there were only more than 200 Japanese soldiers guarding the position, and it was in the dark night, of course, they could not defend the position, and they were defeated by the crossing army, abandoned the position, and retreated in the direction of Tianjin.

The crossing army did not take advantage of the victory to pursue, but marched towards the river, and happened to encounter the defeat of the Japanese army crossing the river, so it was natural to catch up and give them a head-on blow. In fact, there were more than 200 Japanese troops who were defeated and retreated at this time, and the number was more than double that of the crossing army, but at this time, the army was disheartened, had no fighting spirit, and had no intention of fighting at all, and as a result, they were killed by the crossing army and fled. The crossing army pursued separately, killed many Japanese soldiers, and captured a lot.

In the Japanese positions garrisoned in Gegu, the resistance of the Japanese army was uprooted one by one by the passing army, and the strongholds became fewer and fewer, but the reinforcements were delayed, although Fukushima Yasumasa did not know it and could not wait for the reinforcements to arrive, but he also completely lost his patience, and could only order the Japanese army to retreat and retreat to Tianjin to garrison first.

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After receiving the order from the headquarters, the troops lurking in Lubeikou immediately took action, originally they had been waiting in Lubeikou for a day and a night, waiting a little anxiously, but now they finally got the order, the whole army was suddenly in high spirits, the commander Qiu Yahui immediately ordered, the helicopter took off, the whole army attacked, together with two warrior vehicles, together with the city of Tianjin.

The city wall of Tianjin City was built in 1404 (the second year of Yongle in the Ming Dynasty), it is about 1,600 meters long from east to west, about 1,000 meters long from north to south, and it is shaped like an abacus, so it is called "Abacus City". The height of the city is about 11 meters, and a total of four city gates are set up, which are named after the east of the town, Anxi, Dingnan and Gongbei respectively. There are four corner towers at the four corners of the city, and seven forts around the city are set up around the city. There are four cross-crossed streets in the east, west, south and north in the city, the city of Tianjin is divided into four equal parts, and there is a bell and drum tower at the intersection of the cross street, in order not to affect the traffic, the base of the bell and drum tower is a cross through the heart structure.

After the establishment of the Qing Dynasty, the city wall of Tianjin City was still retained, but at this time, Tianjin prospered in all aspects such as politics, economy, transportation, culture, etc., and gradually became a prosperous city in the north of our country second only to Beijing, and the area of Tianjin City was small, and it could not accommodate so many people, so it gradually expanded to the outside of the city, and it also formed the old city of Tianjin in the old time and space.

In the old time and space, after the Eight-Nation Coalition occupied Tianjin, on November 26, 1900, it "demolished the Tianjin city wall for military purposes and health reasons", and added the clause that Tianjin would never build the city wall in the future in the later [Xinchou Treaty], and built a ring road on the foundation site of the old city wall, that is, the east, south, west and north roads of Tianjin in later generations, thus facilitating the traffic of Tianjin and creating conditions for the development and prosperity of the city in the future.

Before the invasion of China by the Eight-Nation Alliance, Britain, France, the United States, Japan, and Germany had their own concessions in Tianjin, and after the Eight-Nation Coalition occupied Tianjin, Russia, Italy, Austria-Hungary, and Belgium also took the opportunity to occupy territory in Tianjin and establish their own concessions. It has formed a vast concession area from the southeast of Tianjin Chengxiang in the north, to the first line of the Qiangzi River (now Nanjing Road) in the west, to Xiaosunzhuang in the south, and to the Jingshan Railway in the east, covering an area far exceeding the Tianjin City.

For the crossing army, of course, the Tianjin concession is to be recovered, but now the first thing is to capture Tianjin City, because Tianjin City is protected by a city wall, and the number of crossing troops is not large, and after occupying Tianjin City, it can be defended according to the city. The concession area is not only extensive, but also has no city walls to defend it, so it is difficult to defend it even if it is captured. It is better to capture the city of Tianjin first, gain a foothold, and then wait for the main force to arrive before attacking the concession.

Qiu Yahui had done his homework on the plan of attacking Tianjin, and the breakthrough target he chose was the West Gate of Tianjin, because the West Gate was the farthest away from the concession area, and there was enough space to arrange blocking positions to prevent reinforcements from the concession.

It was the platoon led by Luo Yue who was responsible for the main attack on Tianjin City, and Qiu Yahui sent a platoon of his company to set up a position in the area of Haiguang Temple to block the reinforcements of the concession, and the second and third platoons were responsible for the follow-up attack.

After assigning the task, Luo Yue immediately led the whole platoon of soldiers to launch an attack on Tianjin City. Because it was about 11 o'clock in the evening, the moon was dark and the wind was high, and the Japanese troops guarding Tianjin had almost already been dispatched to attack Dagukou, and there were only more than 200 Japanese soldiers left in the city at this time.

After the Eight-Nation Coalition captured Tianjin, the commanders of various countries reached a compromise after many consultations, that is, Russia, Britain, and Japan, which had the largest number of troops at that time, each sent an officer to serve as a member of the provisional government, with equal powers. It formed a temporary management of local affairs inside and outside the city of Jinjun, and later changed its name to the provisional government of Tianjin.

Responsible for managing the affairs of the Allied forces during the occupation of Tianjin. The three members of the provisional government were: Colonel Vogak, who was Army Counselor of the Russian Embassy in China, Colonel Bauer, a British soldier who served as an instructor in Weihai, Shandong, and Aoki Nobusumi, a "China expert" of the Japanese Military Department. After Fukushima Yasumasa led the Japanese army to set off, Aoki Nobujun went out with the army, and the other two people were responsible for the defense of Tianjin City.

Although the loss of Dagukou also made the remaining two members of the provisional government feel very surprised, but they did not pay too much attention to it, thinking that this was just an exception, it may be that the rest of the Boxers are making trouble again, as long as the Eight-Nation Coalition Army returns, it can immediately recapture Dagukou, not to mention that the German fleet is also coming soon, so after Fukushima Yasumasa led the Japanese army to leave Tianjin, the two of them were very relieved, they did not expect that the war would spread to Tianjin City, they were not prepared at all, and the soldiers defending the city were naturally very lax, and they did not even notice that the army was approaching the edge of Tianjin。

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